Inclusion Criteria The study population will include men and women over 18 years of age identified from the practices of local cardiologists, whose fasting plasma glucose concentration is 5.4-7.7 mmol/L, and who had confirmed CAD (diagnosed on the basis of a previous myocardial perfusion study or cardiac catheterization, or a history of a myocardial infarction or coronary artery angioplasty or coronary artery bypass surgery).